7. Hydrometallurgical recycling
Hydrometallurgical processes are based on the dissolution or leaching of chemical elements by an aqueous solution, then their purification by selective adsorption on ion exchangers, liquid-liquid extraction or acid-base or oxidation-reduction precipitation
[M 2 235]
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These methods are best suited to closed-loop recycling, as they achieve high levels of purification (99.9%) compatible with direct reuse...
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Hydrometallurgical recycling